258 lines
11 KiB
C#
258 lines
11 KiB
C#
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using System.Collections.Generic;
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using UnityEngine;
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#if SSC_ENTITIES
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using Unity.Transforms;
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using Unity.Entities;
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using Unity.Mathematics;
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using Unity.Jobs;
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using Unity.Collections;
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using Unity.Rendering;
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#endif
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// Sci-Fi Ship Controller. Copyright (c) 2018-2023 SCSM Pty Ltd. All rights reserved.
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namespace SciFiShipController
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{
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/// <summary>
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/// Sample prefab spawner to create something like an asteroid field. The DOTS option
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/// uses currently doesn't support colliders but has the benefit of random rotation.
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/// Data Oriented Technology Stack (DOTS) has the same requirements as DOTS with
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/// Projectiles in Sci-Fi Ship Controller. See the manual for more info on DOTS setup.
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/// </summary>
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[AddComponentMenu("Sci-Fi Ship Controller/Samples/Obstacle Spawner")]
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[HelpURL("http://scsmmedia.com/ssc-documentation")]
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public class SampleObstacleSpawner : MonoBehaviour
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{
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#region Public variables
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public bool initialiseOnAwake;
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[Tooltip("Experimental")]
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public bool useDOTS = false;
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public Transform[] obstaclePrefabs;
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public Vector3 obstacleFieldCentre = new Vector3(500f, 250f, 500f);
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public Vector3 obstacleFieldSize = new Vector3(5000f, 500f, 5000f);
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public int obstacles = 2500;
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public Vector3 obstacleScaleMin = Vector3.one * 5f;
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public Vector3 obstacleScaleMax = Vector3.one * 20f;
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#if SSC_ENTITIES
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public World asteroidWorld;
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public List<EntityArchetype> asteriodEntityArchetypeList;
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public List<Entity> asteriodPrefabEntityList;
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public AsteroidSystem asteroidSystem;
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#if UNITY_2019_3_OR_NEWER || UNITY_ENTITIES_0_2_0_OR_NEWER
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private BlobAssetStore blobAssetStore;
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#endif
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#endif
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#endregion
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#region Private variables
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private List<Transform> obstacleTrmList;
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private List<Vector3> obstacleRotationDirectionList;
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private List<float> obstacleRotationRateList;
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private int numObstaclesToRotate = 0;
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#endregion
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#region Initialise Methods
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private void Awake()
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{
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if (initialiseOnAwake) { Initialise(); }
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}
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public void Initialise()
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{
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int numObstaclePrefabs = obstaclePrefabs == null ? 0 : obstaclePrefabs.Length;
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if (numObstaclePrefabs > 0)
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{
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float minX = obstacleFieldCentre.x - (obstacleFieldSize.x * 0.5f);
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float maxX = obstacleFieldCentre.x + (obstacleFieldSize.x * 0.5f);
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float minY = obstacleFieldCentre.y - (obstacleFieldSize.y * 0.5f);
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float maxY = obstacleFieldCentre.y + (obstacleFieldSize.y * 0.5f);
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float minZ = obstacleFieldCentre.z - (obstacleFieldSize.z * 0.5f);
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float maxZ = obstacleFieldCentre.z + (obstacleFieldSize.z * 0.5f);
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Vector3 newPosition = Vector3.zero;
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Vector3 newScale = Vector3.one;
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UnityEngine.Random.InitState(0);
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bool isDOTSConfigured = false;
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if (useDOTS) { isDOTSConfigured = this.ConvertPrefabsToEntities(); }
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else
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{
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obstacleTrmList = new List<Transform>(obstacles);
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obstacleRotationDirectionList = new List<Vector3>(obstacles);
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obstacleRotationRateList = new List<float>(obstacles);
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}
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for (int i = 0; i < obstacles; i++)
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{
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newPosition.x = UnityEngine.Random.Range(minX, maxX);
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newPosition.y = UnityEngine.Random.Range(minY, maxY);
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newPosition.z = UnityEngine.Random.Range(minZ, maxZ);
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newScale = new Vector3(UnityEngine.Random.Range(obstacleScaleMin.x, obstacleScaleMax.x), UnityEngine.Random.Range(obstacleScaleMin.y, obstacleScaleMax.y), UnityEngine.Random.Range(obstacleScaleMin.z, obstacleScaleMax.z));
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float rotationRate = UnityEngine.Random.Range(0.1f, 1.0f);
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Vector3 rotationDirection = new Vector3(UnityEngine.Random.Range(0.01f, 1.0f), UnityEngine.Random.Range(0.01f, 1.0f), UnityEngine.Random.Range(0.01f, 1.0f));
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// By design, if the DOTS option is enabled but DOTS is not configured it will render nothing in the scene.
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if (useDOTS)
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{
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if (isDOTSConfigured)
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{
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#if SSC_ENTITIES
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AsteroidSystem.CreateAsteroid(newPosition, Quaternion.identity, newScale, rotationRate, rotationDirection, asteriodPrefabEntityList[UnityEngine.Random.Range(0, numObstaclePrefabs - 1)]);
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#endif
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}
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}
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else
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{
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// select a prefab from the list and add it to the scene
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Transform obstacleTrfm = Instantiate(obstaclePrefabs[UnityEngine.Random.Range(0, numObstaclePrefabs - 1)], newPosition, Quaternion.identity, transform);
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if (obstacleTrfm != null)
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{
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obstacleTrfm.localScale = newScale;
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obstacleTrmList.Add(obstacleTrfm);
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obstacleRotationDirectionList.Add(rotationDirection);
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obstacleRotationRateList.Add(rotationRate);
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numObstaclesToRotate++;
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}
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}
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}
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}
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}
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/// <summary>
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/// Convert the set of prefabs into Entities.
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/// Create an instance of the AsteroidSystem.
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/// </summary>
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/// <returns></returns>
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public bool ConvertPrefabsToEntities()
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{
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bool isConfigured = false;
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#if SSC_ENTITIES
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int numObstaclePrefabs = obstaclePrefabs == null ? 0 : obstaclePrefabs.Length;
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// Create empty lists with sufficient capacity
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asteriodEntityArchetypeList = new List<EntityArchetype>(numObstaclePrefabs > 0 ? numObstaclePrefabs : 1);
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asteriodPrefabEntityList = new List<Entity>(numObstaclePrefabs > 0 ? numObstaclePrefabs : 1);
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if (numObstaclePrefabs > 0 && useDOTS)
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{
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asteroidWorld = DOTSHelper.GetDefaultWorld();
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if (asteroidWorld != null)
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{
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#region Construct Entity Archetypes
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#if UNITY_2019_3_OR_NEWER || UNITY_ENTITIES_0_2_0_OR_NEWER
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blobAssetStore = new BlobAssetStore();
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GameObjectConversionSettings conversionSettings = GameObjectConversionSettings.FromWorld(asteroidWorld, blobAssetStore);
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#endif
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// Reserve some space for colliders
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List<Collider> colliderList = new List<Collider>(4);
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for (int pfIdx = 0; pfIdx < numObstaclePrefabs; pfIdx++)
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{
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// NOTE: Currently, if there are Colliders on child gameobjects in the prefab, it doesn't render
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// after being converted to an entity.
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obstaclePrefabs[pfIdx].GetComponentsInChildren<Collider>(colliderList);
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int numColliders = colliderList == null ? 0 : colliderList.Count;
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for (int clIdx = 0; clIdx < numColliders; clIdx++)
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{
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Collider collider = colliderList[clIdx];
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// Ignore colliders on the parent
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if (collider.transform != obstaclePrefabs[pfIdx])
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{
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if (collider.enabled) { collider.enabled = false; }
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//Debug.Log("[DEBUG] collider: " + collider.name);
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}
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}
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//if (collider != null) { Debug.Log("[DEBUG] collider: " + collider.name); }
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// U2019.3 introduced Entities 0.2.0
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#if UNITY_2019_3_OR_NEWER || UNITY_ENTITIES_0_2_0_OR_NEWER
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Entity prefabEntity = GameObjectConversionUtility.ConvertGameObjectHierarchy(obstaclePrefabs[pfIdx].gameObject, conversionSettings);
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#else
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// U2019.1, 2019.2 Entities 0.012 preview 33 to 0.1.1 preview.
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Entity prefabEntity = GameObjectConversionUtility.ConvertGameObjectHierarchy(obstaclePrefabs[pfIdx].gameObject, asteroidWorld);
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#endif
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asteriodPrefabEntityList.Add(prefabEntity);
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// NOTE: We many only need one of these for all the Asteroid prefabs
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ComponentType[] archetypeComponentTypeArray = new ComponentType[4];
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// With ConvertGameObjectHierarchy not sure if we need Translation and Rotation here given they are automatically added
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archetypeComponentTypeArray[0] = typeof(Translation);
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archetypeComponentTypeArray[1] = typeof(Rotation);
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archetypeComponentTypeArray[2] = typeof(Asteroid);
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// NOTE: Requires hybrid renderer
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archetypeComponentTypeArray[3] = typeof(RenderMesh);
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EntityArchetype entityArcheType = asteroidWorld.EntityManager.CreateArchetype(archetypeComponentTypeArray);
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asteriodEntityArchetypeList.Add(entityArcheType);
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}
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#endregion
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// Initialise Asteroid system
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if (asteroidSystem == null)
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{
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asteroidSystem = asteroidWorld.GetOrCreateSystem<AsteroidSystem>();
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}
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}
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isConfigured = asteroidSystem != null;
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}
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#endif
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return isConfigured;
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}
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#endregion
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#region Event Methods
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private void Update()
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{
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if (useDOTS) { return; }
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else
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{
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float deltaTime = Time.deltaTime;
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// Rotate all the obstacles
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for (int aIdx = 0; aIdx < numObstaclesToRotate; aIdx++)
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{
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obstacleTrmList[aIdx].rotation *= Quaternion.AngleAxis(obstacleRotationRateList[aIdx] * deltaTime * Mathf.Rad2Deg, obstacleRotationDirectionList[aIdx]);
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}
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}
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}
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#if SSC_ENTITIES && (UNITY_2019_3_OR_NEWER || UNITY_ENTITIES_0_2_0_OR_NEWER)
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private void OnDestroy()
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{
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// Dispose of the BlobAssetStore, else we're get a message:
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// A Native Collection has not been disposed, resulting in a memory leak.
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if (blobAssetStore != null) { blobAssetStore.Dispose(); }
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}
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#endif
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#endregion
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#region Private Methods
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#endregion
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}
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}
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